A bituminous or hydrogenous coal yielding a high proportion of volatile material, and therefore available for the manufacture of illuminating gas.

A bituminous coal which softens and becomes pasty or semiviscid when heated. On increasing the heat, the volatile products are driven off, and a coherent, grayish-black, cellular mass of coke is left.

(mining) mineral coal

coal coming from the ground, as opposed to charcoal / Silky fibrous layers of charcoal, interlaminated in beds of ordinary bituminous coal.

Anthracite, as distinguished from bituminous soft coal.

the type of coal used in coal-fired electrical power plants

The type of coal used for the making of steel.

Dried dung of buffalo or cattle.

The smoke from burning coal.

plural of coal burner